Subject: General Aptitude · Chapter: Time and Work · Exam: · Marks: · Difficulty:
Sixteen men can complete a work in twelve days. Twenty-four children can complete the same work in eighteen days. Twelve men and eight children started working and after eight days three more children joined them. How many days will they now take to complete the remaining work ?
(a)2 days
(b)4 days
(c)6 days
(d)8 days
(e)None of these
Answer
Answer (as printed): B
Explanation
1 man’s 1 day’s work = ; 192 1 1 child’s 1 day’s work = . 432 12 8 1 1 35 Work done in 8 days = 8 + = 8 + = . 192 432 16 54 54 35 19 Remaining work = 1 − = . 54 54 12 11 19 (12 men + 11 children)’s 1 day’s work = + = . 192 432 216 19 Now, work is done by them in 1 day. 216 19 216 19 ∴ work will be done by them in × = 4 days. 54 19 54 1
Explanation as extracted from the printed page; notation may be imperfect.